达西多孔介质中Ag - Mgo/水混合纳米流体磁化流动的非相似传热分析

IF 2.3 4区 工程技术 Q1 MATHEMATICS, APPLIED Zamm-zeitschrift Fur Angewandte Mathematik Und Mechanik Pub Date : 2023-09-07 DOI:10.1002/zamm.202200628
Umer Farooq, Amina Jadoon, Muzamil Hussain, M. Sheremet
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引用次数: 0

摘要

本研究旨在研究Ag-MgO /水混合纳米流体在植入达西多孔介质的延伸片上的磁化流动。热辐射,焦耳和粘性耗散被纳入能量方程,以说明传热。在薄板表面施加对流热通量边界条件。使用非相似转换,将控制方程转换为无因次偏微分方程(PDEs)系统。利用局部非相似方法将这些方程转化为普通方程。利用MATLAB的bvp4c函数对常微分方程(ode)进行数值模拟。基本参数正变化时的速度和热分布图解。结果表明,随着达西数的增加,速度剖面增大。磁数、体积分数、辐射参数、Eckert数和Biot数均为正变化,温度分布呈上升趋势,其他参数均呈下降趋势。皮肤摩擦系数和传热率进行了彻底的研究,并通过表格报告了结果。表面摩擦系数的大小随着体积分数、吸力参数和磁性参数的增加而增大,而传热则随着达西数、吸力参数、辐射参数和Biot数的增加而增强。据作者所知,目前还没有发表过使用局部非相似方法的模型。这项工作可能为对热系统和太阳能收集感兴趣的研究人员提供见解。
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Non‐similar heat transfer analysis of magnetized flow of Ag‐Mgo/water hybrid nanofluid flow through darcy porous medium
This study aims to examine the magnetized flow of Ag–MgO/water hybrid nanofluid over an extending sheet implanted in Darcy porous medium. Thermal radiations, Joule and viscous dissipations are incorporated into energy equation to account for heat transfer. The convective heat flux boundary condition is imposed at sheet surface. Using non‐similar conversions, governing equations are converted to a system of dimensionless partial differential equations (PDEs). These equations are transformed into ordinary ones by using local non‐similar method. MATLAB's bvp4c function is used to numerically simulate the ordinary differential equations (ODEs). The velocity and thermal profiles for positive variation of essential parameters are illustrated graphically. It was concluded that the velocity profile increases for the rising Darcy number. On the other hand, the temperature profile increased for the positive variation of magnetic number, volume fraction, radiation parameter, Eckert number and Biot number while decreasing for all other parameters. The skin friction coefficient and heat transfer rates are thoroughly investigated and findings are reported through tables. It was found that the magnitude of skin friction coefficient rises with an increase in volume fraction, suction and magnetic parameters while the heat transfer is enhanced by increases in Darcy number, suction parameter, radiation parameter, and Biot number. As per the author's knowledge, no work has previously been published on the current model using the local non‐similarity method. This work may provide insight to researchers interested in thermal systems and solar energy harvesting.
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来源期刊
CiteScore
3.30
自引率
8.70%
发文量
199
审稿时长
3.0 months
期刊介绍: ZAMM is one of the oldest journals in the field of applied mathematics and mechanics and is read by scientists all over the world. The aim and scope of ZAMM is the publication of new results and review articles and information on applied mathematics (mainly numerical mathematics and various applications of analysis, in particular numerical aspects of differential and integral equations), on the entire field of theoretical and applied mechanics (solid mechanics, fluid mechanics, thermodynamics). ZAMM is also open to essential contributions on mathematics in industrial applications.
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